[Bug 272209] x11/xdm: error: incompatible function pointer types (LLVM16)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272209

--- Comment #4 from [email protected] ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/ports/commit/?id=ffa7085ab4121e92eb61c4e1f6a7138e7ea43d6a

commit ffa7085ab4121e92eb61c4e1f6a7138e7ea43d6a
Author:     Dimitry Andric <[email protected]>
AuthorDate: 2023-06-25 18:26:57 +0000
Commit:     Dimitry Andric <[email protected]>
CommitDate: 2023-06-28 17:25:30 +0000

    x11/xdm: fix build with clang 16

    Clang 16 has a new error about incompatible function types, which shows
    up when x11/xdm:

      greet.c:451:20: error: incompatible function pointer types assigning to
'void (*)(void)' from 'int (*)(void)' [-Wincompatible-function-pointer-types]
          __xdm_setgrent = dlfuncs->_setgrent;
                         ^ ~~~~~~~~~~~~~~~~~~

    This is because it assumes setgrent(3) returns int, which it has not
    done since a very long time.

    Reported by:    O. Hartmann <[email protected]>
    PR:             272209
    MFH:            2023Q2

 x11/xdm/Makefile                          |  1 +
 x11/xdm/files/patch-include_greet.h (new) | 11 +++++++++++
 2 files changed, 12 insertions(+)

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